Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/935310

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Title
A study of polar cap Pc1-2: source locations and wave propagation
Author/Creator
Ables, Sean;  Sciffer, Murray;  Fraser, Brian;  Morley, Steven
Institution
The University of Newcastle. Faculty of Science & Information Technology, School of Mathematical and Physical Sciences
Description
The occurrence of Pcl-2 ULF waves in Scott Base and Casey Antarctic magnetometer data has been examined with the objective of determining whether the source region for these waves is located in the Earth's cusp/boundary layer region or the magnetosheath. In particular we explore the hypothesis that some Pcl-2 events are propagated along open field lines which convect over the southern polar cap. For a selected event the location of Scott Base with respect to the open/closed field line boundary was independently determined using DMSP spacecraft particle data and well established particle energy and flux criteria. This event provides evidence that Pcl-2 waves can be seen on the ground well inside the polar cap. The possibility of propagation in the ionospheric waveguide, away from the footpoint of the source, is investigated using numerical modelling and realistic ionospheric parameters. Under the modelled conditions we find a modification of wave ellipticity which excludes this explanation for the polar cap Pcl-2 seen in the event study.
Relation
9th Australian Space Science Conference (ASSC 2010). Proceedings of the 9th Australian Space Science Conference (Sydney 28-30 Spetember, 2010) p. 105-114
Relation
http://www.nssa.com.au/ocs/index.php?cf=11
Date
2010
Publisher
National Space Society of Australia
Keyword(s)
magnetosphere;  ULF waves;  geomagnetic mapping;  Antarctica
Resource Type
conference paper
Identifier
http://hdl.handle.net/1959.13/935310
Identifier
ISBN:9780977574032
Reviewed
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"A study of polar cap Pc1-2: source locations and wave propagation"
 
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